To get started:

1. Create a Managed Service for Trino cluster.
2. Connect to the Managed Service for Trino cluster.
3. Send queries to the Yandex Managed Service for PostgreSQL cluster through Trino.
4. Check the queries in the Managed Service for PostgreSQL cluster.

Getting startedGetting started

1. Go to the management console and log in to Yandex Cloud or sign up if not signed up yet.

2. If you do not have a folder yet, create one:

   1. In the management console, select the appropriate cloud from the list on the left.

   2. At the top right, click Create folder.

   3. Give your folder a name. The naming requirements are as follows:

      • It must be from 2 to 63 characters long.
      • It may contain lowercase Latin letters, numbers, and hyphens.
      • It must start with a letter and cannot end with a hyphen.

   4. Optionally, specify the description for your folder.

   5. Select Create a default network. This will create a network with subnets in each availability zone. Within this network, you will also have a default security group, inside which all network traffic will be allowed.

   6. Click Create.

3. Assign the following roles to your Yandex Cloud account:

   • managed-trino.admin: To create a cluster.
   • vpc.user: To use the cluster network.
   • iam.serviceAccounts.user: To link a service account to the cluster.

   Note

   If you are unable to manage roles, contact your cloud or organization administrator.

4. Create a service account with the managed-trino.integrationProvider and storage.editor roles.

5. Create a Yandex Managed Service for PostgreSQL cluster Trino will work with.

Create a Managed Service for Trino clusterCreate a Managed Service for Trino cluster

Connect to the Managed Service for Trino cluster through the Trino CLIConnect to the Managed Service for Trino cluster through the Trino CLI

If you do not have the Trino CLI yet, install it using the guide on the official Trino website.

To connect to an Managed Service for Trino cluster:

1. Create an IAM token and put it to the TRINO_PASSWORD environment variable:

   export TRINO_PASSWORD=$(yc iam create-token)
   

   This IAM token in TRINO_PASSWORD will be your password to the Managed Service for Trino cluster. To enable it, specify the --password flag upon connection.

2. Connect to the Managed Service for Trino cluster:

   ./trino <coordinator_URL> --user iam --password
   

   You can copy the coordinator URL and paste it to the Coordinator field on the Trino overview page in the management console.

Send queries to the Managed Service for PostgreSQL cluster through TrinoSend queries to the Managed Service for PostgreSQL cluster through Trino

1. Connect to the Trino cluster through the Trino CLI.

   To follow the steps below, use the Trino CLI.

2. Create a new schema in the Managed Service for PostgreSQL cluster:

   CREATE SCHEMA IF NOT EXISTS test.tpch_postgresql;
   

3. Create a table:

   CREATE TABLE IF NOT EXISTS test.tpch_postgresql.customers (
      name VARCHAR,
      phone VARCHAR,
      acctbal DOUBLE
   );
   

4. Populate the table with data from the test data folder:

   INSERT INTO test.tpch_postgresql.customers
   SELECT
     name,
     phone,
     acctbal
   FROM data.sf100000.customer
   LIMIT 1000000;
   

5. Get the number of rows in the table:

   SELECT COUNT(*) as count FROM test.tpch_postgresql.customers;
   

   Expected response:

     count  
   ---------
    1000000 
   (1 row)
   

Check the queries in the Managed Service for PostgreSQL clusterCheck the queries in the Managed Service for PostgreSQL cluster

To check whether the queries to the Managed Service for PostgreSQL cluster are running correctly, connect to the cluster database and get the number of rows in the customers table:

SELECT COUNT(*) FROM tpch_postgresql.customers;

Expected response:

  count  
---------
 1000000
(1 row)

What's next

• Learn about service resource relationships.
• Explore other methods of connecting to a Managed Service for Trino cluster.